Complex Concentrated Alloys for Substitution of Critical Raw Materials in Applications for Extreme Conditions

Dumitru Mitrica, Ioana Cristina Badea, Beatrice Adriana Serban, Mihai Tudor Olaru, Denisa Vonica, Marian Burada, Radu-Robert Piticescu, Vladimir V. Popov
2021 Materials  
The paper is proposing a mini-review on the capability of the new complex concentrated alloys (CCAs) to substitute or reduce the use of critical raw materials in applications for extreme conditions. Aspects regarding the regulations and expectations formulated by the European Union in the most recent reports on the critical raw materials were presented concisely. A general evaluation was performed on the CCAs concept and the research directions. The advantages of using critical metals for
more » ... ular applications were presented to acknowledge the difficulty in the substitution of such elements with other materials. In order to establish the level of involvement of CCAs in the reduction of critical metal in extreme environment applications, a presentation was made of the previous achievements in the field and the potential for the reduction of critical metal content through the use of multi-component compositions.
doi:10.3390/ma14051197 pmid:33806567 fatcat:qi3fpxsnprgvbhpibyevualway